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Interactive display of isosurfaces with global illumination
Chris Wyman1, Steven Parker, Peter Shirley
1The University of Iowa, Iowa City 52242-1419, USA. cwyman@cs.uiowa.edu
Abstract:
In many applications, volumetric data sets are examined by displaying isosurfaces, surfaces where the data, or some function of the data, takes on a given value. Interactive applications typically use local lighting models to render such surfaces. This work introduces a method to precompute or lazily compute global illumination to improve interactive isosurface renderings. The precomputed illumination resides in a separate volume and includes direct light, shadows, and interreflections. Using this volume, interactive globally illuminated renderings of isosurfaces become feasible while still allowing dynamic manipulation of lighting, viewpoint and isovalue.
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